Terminal cover



July 31, 1923. V 1,678,852 R. EHRE NFELD TERMI NAL C OVER Filed Dec. 2. 1922 WITNESSES: INVENTOR 6T. Ralph Ehremfeld. I BY A'TTORNEY Patented July 31, 1928.

UNITED STATES s,ssz PATENT OFF-ICE.

RALPH EiHBENFELD, 03' EAST PITTSBURGH, PENNSYLVANIA, ASSIGNOB TO WEBTII'G- I HOUSE ELECTRIC & VANIA.

MANUFACTURING comrm, A conrom'rrou or 211mm TERMINAL COVER.

Application filed December 2, 1822. Serial No. 604,572.

My invention relates to terminal covers and particularly to covers for enclosing the terminals of generators and motors.

One object of my invention is to provide a terminal cover having an open face that secured to a generator or motor frame and which is provided with a bottom wall, having a slot therein for recelvmg a flanged conduit bushing, which serves to prevent 1 displacement of the conduit or bushing when the cover is in operatlve p0S1t10I1.

Another object of my invention is to provide a terminal cover that interlocks with the conduit bushing previously applied to 15 the conduit when the cover is secured to the motor or generator frame.

Another object of my invent1on 1s to provide a terminal cover that may be made of cast metal or pressed metal that requires a minimum amount of finishing after the casting or pressing operations and whlch s adapted to receive a cast metal conduit bushing.

A further object of my invention 1s to pro- 26 vide a terminal cover that is Inexpensive to manufacture and which may readily be assembled.

. These and other objects,"that will be made apparent throughout the further description of my invention, are attained hy means of the apparatus hereinafter described, and

illustrated in the accompanylng drawmgs, wherein:

Figure 1 is a vertical section throu h the terminal cover applied to a generator rame,

showing the terminals enclosed by the housin together with the conduit and bushing; Fig. 2 is a bottom plan view of the cover shown in Fig. 1; Fig. 3 is an elevational view of the cover shown in Fig. 1, and

Fi 4 is a lan view of the conduit bushing s own in ig. 1.

Referring to the drawings, the cover comprises a metal casing 5 having an 0 en side portion 6 and a bottom portion 7 s osed at right angles thereto that 1s provide with a slot 8 w open side of the casing. The bottom wall surrounding the slot 8 is of greater thickness than the remainder of the wall and constitutes a flat seat 9 for receiving a conduit bushing, to be hereinafter described.

The open side 6 of the casing is provided ich extends inwardly from thewith flanges 11 having r-forations 12 there n through which attac i ng bolts 13 extend into tapped holes in the motor or generator frame 10.

The conduit 14, which contains the conductors of the enerator. or motor, is provlded with a t eaded bushing 15 having flanges 16 and 17 spaced apart to provide grooves 18 therebetween of sli htly greater width than the thickness 0 the seat 9. Therefore, the bushing may be attached to the casing 5 by sliding the bushing into the slot 8, the flanges servin to prevent lon tudinal movement of the ushing. When t? cover is in assembled position upon the generator or motor frame 10,.the bushing cannot be withdrawn from the groove and, therefore, lateral displacement of the bushing is prevented by the motorv or generator frame 10.

In order to assemble the various parts, the bushing is first secured u on the threaded end of the conduit and p aced beneath the terminals 19 in the position indicated in Fig. 1. The casing 5 is then moved toward the frame in such manner that the edges of the slot 8 enga e between the flanges of the bushing. place.

The casing affords a sim le and secure means for attachin the condllit bushing to the motor frame. ile I have indicated, in the drawings, a casing made of cast metal,

T e bolts 13 are then screwed in it is obvious that the construction of the casing is such that it may be economically drawn or pressed from sheet metal.

While I have illustrated and described but one embodiment of m invention, it will heapparent to those ski ed in the art that various modifications, changes, substitutions, additions and omissions may be made therein without departing from the spirit and scope of my invention, as set forth in the appended claims.

I claim as my invention:

' 1. The combination with a terminal cover havin an open side and having means where y the open side may be secured-to a support for enclosing a terminal thereon and having a slot in a side wall thereof extending inwardl from the 0 on side of the cover, of a con uit bushing aving flanges thereon for engaging the edge portions of the slot when t e cover is in operative position for preventing lon itudinal displacement of the bushing with respect to the cover. h

2. The combination with a terminal cover h in an open side and having means ere y the open side may be secured to a support for enclosing a terminal thereon and, having a slot in a side wall thereof extending inwardly from the 0 en side of the cover, of a. con uit bushing aving flanges thereon for engaging the edge portions of the slot and removable therefrom only through the open side of the cover.

3. The combination with a terminal cover having an open side and having means whereby the open side may be secured to a support for enclosing a terminal thereon and aving a rectangular slot in a side wall thereof extending inwardl from the open side of the cover, of a con uit bushing provided with a rectangular portion having flanges thereon for engaging the edge portions of the slot when the cover is in operative position for reventing rotation or displacement of the bushing with respect to the cover.

In testimony whereof, I have hereunto subscribed my name this 27th day of November, 1922 RALPH EHRENFELD. 

